Installers

With Windows64 there are two Program Files folder: Program Files (x86) for 32 bit apps and Program Files for 64 bit apps and Windows does the mess redirecting the file location.
It is possible that dzinstall.ini was intalled in the Program Files folder and when you run Daz program, as it is a 32bit application, Windows will redirect the Program Files path to Program Files (x86) where dzinstall.ini does not exist!!!

Stupidity also evolves!